Strontium (Sr, atomic number 38, average atomic mass = 87.62) naturally exists as 4 stable isotopes with masses of 84, 86, 87, and 88.  Which statement is correct?  A.Strontium-86 is the most abundant.  B.Strontium-87 is the most abundant.  C.Strontium-88 is the most abundant.  D.All strontium isotopes are equally abundant

Q: D Only one of the following atomic notations is written correctly. a. 3478Se b. 2⁹90 73 328e d.…

A: Atomic number of an element is equal to number of protons.Mass number of an element or an atom is…

Q: Bromine has two naturally occurring isotopes, Br-79 and Br-81. Given that on the planet Saturn the…

A: To determine which of the isotope is the most abundant on Saturn.

Q: Lithium has two naturally occurring isotopes, Li and Li. The average atomic mass of lithium is…

A: Isotopes are defined as atoms having same atomic number but different mass number due to different…

Q: As we saw in the previous problem, lithium has two naturally occurring isotopes: Li-6 (natural…

A: The mass which is closest to the atomic mass of Li has to be given.

Q: 1. Which of the following is not one of Dalton's laws? a) Atoms are indestructible. b) Atoms of the…

A:

Q: 32. Categorize each element as a representative element, a transition metal, or a noble gas. a.…

A:

Q: Which statement about the three fundamental particles is false? O a. The charge of a proton is equal…

A: Electrons, protons and neutrons are considered as fundamental partials of atom

Q: 9. a. What is the atomic number of an element? b. What is the mass number of an isotope? c. In the…

A: Given question is related to defining atomic number, mass number of an element.

Q: You are asked to determine the composition of a gas. There are three componets with three different…

A: Atomic number (Z) :-  The number of protons inside the nucleus of an atom is called atomic number.…

Q: For each atom described, list the number of electrons, protons and neutrons. a. Neutral Ne 1910 b.…

A:

Q: 2. The isotope of iodine with a mass number 131 is often used in medicine as a radioactive tracer.…

A: We know that, Number of proton= Atomic number=no. of electron (when no any charge present) no. of…

Q: A. What is the mass number of an atom of Iron ( atomic number 26) with 32 neutrons?  B. Is this…

A:

Q: a. Use the average atomic mass to calculate the mass in grams present in 0.158 mol of lithium. g b.…

A:

Q: 4. 14N and 1C have the same number of A. isotopes. B. protons. C. neutrons. D. electrons.

A: The subscript denotes the atomic number and the superscript denotes atomic mass.

Q: Why do atoms combine chemically with other atoms?

A: To explain: Why do atoms combine chemically with other atoms?

Q: Silicon has three isotopes: Silicon-28, Silicon-29, and Silicon-30. Which isotope is the most…

A: •So basically this question is based on mass of elements calculated from their isotopes and their…

Q: Element X has two stable isotopes: 35X - 75.77%, 34.97 amu 37X - 36.97%, 36.97 amu a.  Calculate the…

A: a) Note : the % you have mentioned for 37X is not possible as total % of both is becoming > 100%…

Q: 3. which description most accurately describes neptium -239? a. mass number=93, atomic number=239 b.…

A:

Q: Protons, neutrons and electrons each have a mass of 1 amu. a. True b. False

A: The mass of an electron is 0.000549 amu. The mass of proton and neutron is approximately 1 amu.…

Q: B. Use the information provided for each isotope to complete the chart. Atomic Symbol 35C1 88Cr…

A: Note : Dear student since you have posted multiple questions, we will solve only first question for…

Q: . Dalton's Atomic Theory included all of the ideas listed below except   a. All atoms of a given…

A: Ans-32  The postulate that does not give my dalton atomic theory is - An atom is composed of very…

Q: 13. Which of the following are isotopes? a. P3- and Ar b. 1251 and 127| c. O and O2- d. Na* and K*…

A: b) 125I and 127I

Q: Consider the following data for the element Z. Determine the number of b) protons, c)electrons and…

A: Given : There are total 3 isotopes of element Z. Number of protons in isotope 1 = 16  And mass of…

Q: a. Using the average atomic mass of carbon, calculate the mass (in amu) of 137 carbon atoms. amu b.…

A: We have to calculate the mass of atoms from the average atomic masses of the given atoms.

Q: 5. Fill in the following table (the first line is competed as an example) Ion Number of Protons…

A:

Q: Match the elements…

A:

Q: b. An atom that has a mass number of 39 and contains 19 protons. Potassium C. An atom with mass…

A:

Q: 31. Isotopes of an element have the same number of (1), and different number of _(2). A. neutrons…

A:

Q: 5. Complete the following table of neutral atoms of isotopes. Nuclear Symbol 90 39Sr 104 154 Atomic…

A: atomic number = proton numberfor neutral atoms, proton number = atomic number = electron numbermass…

Q: 410 186 412Z X 410 183 Y 186 Which two are isotopes? A. X and Y B. X and R C. Y and R D. Z and R E.…

A:

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.